On Cloudboom Strike LS

Ultralight speed. Engineered for the future.

The Cloudboom Strike LS is built for athletes chasing serious pace. With On's lightest-ever LightSpray™ upper, dual layers of Helion™ HF hyper foam, and a spoon-shaped carbon Speedboard®, it’s designed to deliver maximum propulsion with minimal weight. A seamless, second-skin fit combines cutting-edge sustainability with race-ready innovation – for performance without compromise.

Details

• Weight: 170g
  
• Offset: 8mm (heel-to-toe)
  
• Stack Height: 37mm (heel) / 29mm (forefoot)
  
• Cushioning: Helion™ HF hyper foam (over 40% bio-based)
  
• Upper: LightSpray™ seamless construction
  
• Outsole: Rubber with increased ground contact zones
  
• Sustainability: Upper emits 75% less CO₂ vs. premium alternatives

Features

• LightSpray™ technology: seamless, second-skin upper made from a single filament
• Lace-free, distraction-free fit with just 30g of upper material
• Over 40% bio-based Helion™ HF hyper foam for cushioning and rebound
• Spoon-shaped carbon Speedboard® for energy transfer and propulsion
• Dual layers of Helion™ HF for impact protection and responsiveness
• Maximized outsole traction with increased ground contact
• Sockliner-free design to increase foam content and reduce weight

Ideal For

Runners chasing PRs with a carbon-plated super shoe that blends speed, cushioning, and sustainable innovation. Best for marathons, half-marathons, and high-intensity racing where every gram – and every second – counts.